title: Effect of polymer morphology on P3HT-based solid-state dye sensitized solar cells: an ultrafast spectroscopic investigation.
abstract: Solid-state dye sensitized solar cell devices are fabricated with poly(3-hexylthiophene) (P3HT) as the hole transporting layer. Upon annealing treatment we obtained ≈ 70% increase in the device efficiency compared to un-annealed devices. Our investigation, by means of ultrafast transient absorption spectroscopic characterization, correlates the increased device performances to a more efficient hole-transfer at the dye/polymer interface in the thermally treated P3HT.
authors.forename: R Sai Santosh
authors.initials: RS
authors.lastname: Kumar
authors.forename: G
authors.initials: G
authors.lastname: Grancini
authors.forename: A
authors.initials: A
authors.lastname: Petrozza
authors.forename: A
authors.initials: A
authors.lastname: Abrusci
authors.forename: H J
authors.initials: HJ
authors.lastname: Snaith
authors.forename: G
authors.initials: G
authors.lastname: Lanzani